Every time this comes up, I always say the same thing; the July 20th Movement wanted peace with whomever would give it to them first. They were ready to make peace with the side that would agree to their terms first, regardless of whether it was the Soviets or the Western Allies. Peter Hoffman talks about this in his extensive work on the German Resistance.
Now, the movement had dome very unrealistic ideas about what sort of peace they could achieve (their proposed Minister of Foreign Affairs in the case the Soviets made peace first believed they could negotiate a second Brest-Litovsk), but they really did want peace.
I've done a fair bit of reading on this subject, and I've never seen any evidence that the movement wanted to continue war with the Soviets. Is this just "common knowledge," or can somebody actually point me to a source that proves this? I'm not perfect on my knowledge of the resistance (I focused more on Austrian history), but this claim justvdiesnt match up with what I've read, and I'm afraid I might be missing something.
From what I've read (can't track it down off the top of my head, apologies), some senior members of the plotters (including Stauffenberg) were in favor of negotiating some kind of separate peace with the WAllies, which would allow them to, if not win the war against the Soviets, at least fight them to a draw that prevented occupation.
I do agree that they were looking for peace from whoever would offer it first, but their ideas of what that peace would look like were at best optimistic, at worst delusional. The question is would they, after their ambassadors were laughed out of the Allied HQ's, accepted a peace along the lines of OTL (occupation, dissolution of the government, war crimes trials, the works), or tried to pull off some kind of trick where they engineer a collapse in the West in order to prevent the Soviets from entering Germany proper.
While some of the more hardline anti-Communist members of the WAllied governments might look favorably on the plotters, the cooler/saner heads would almost certainly realize that cutting a deal with the plotters would, especially with the ten million man Soviet juggernaut bearing down on Western Europe, be a
very bad idea.
Of course, this all supposes they're able to eliminate Hitler and the SS without triggering some kind of civil war, which is a mighty big "if".